Balance Sheet (Tables)

3 Months Ended

Apr. 30, 2015

Text Block [Abstract]

Accounts Receivable

	April 30, 2015			January 31, 2015
	(in thousands)
Accounts receivable:
Accounts receivable	$	34,188		$	30,032
Allowance for doubtful accounts		(6,442	)		(6,339	)
Total accounts receivable, net	$	27,746		$	23,693

Schedule of Inventories

	April 30, 2015			January 31, 2015
	(in thousands)
Inventories:
Raw materials	$	6,319		$	6,718
Finished goods		5,754			4,466
Work in progress		1,252			1,017
		13,325			12,201
Less allowance for obsolescence		(817	)		(750	)
Total inventories, net	$	12,508		$	11,451

Schedule of Seismic Equipment Lease Pool and Property and Equipment

	April 30, 2015			January 31, 2015
	(in thousands)
Seismic equipment lease pool and property and equipment:
Seismic equipment lease pool	$	249,236		$	243,211
Land and buildings		366			366
Furniture and fixtures		9,563			9,399
Autos and trucks		732			722
		259,897			253,698
Accumulated depreciation and amortization		(164,128	)		(153,611	)
Total seismic equipment lease pool and property and equipment, net	$	95,769		$	100,087